body {
  margin: 0px;
  overflow-x: hidden;
}
div {
  box-sizing: border-box;
}

.full-page {
  width: 100vw;
  height: 100vh;
}

/* 第一屏 */
.box01 {
  position: relative;
}

.box01 .bg {
  position: absolute;
  display: block;
  width: 100vw;
  height: auto;
  bottom: 0px;
  z-index: -100;
}

/* 菜单 */
.box01 > div:nth-of-type(1) {
  display: flex;
  margin: 1rem auto;
  width: 50%;
  justify-content: space-between;
  align-items: end;
}

.box01 > div:nth-of-type(1) img {
  height: 3.5rem;
}

.box01 > div:nth-of-type(1) a {
  font-weight: bold;
  font-size: 1.5rem;
  color: #000;
  display: inline-block;
  margin-left: 1.5rem;
  text-decoration: none;
  padding: 0.2rem 0px;
}

.box01 > div:nth-of-type(1) a.active,
.box01 > div:nth-of-type(1) a:hover {
  border-bottom: 4px solid #6c9fa9;
}

.box01 > div:nth-of-type(2) {
}

.box01 > div:nth-of-type(2) > div {
  display: flex;
  justify-content: center;
}
